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NVG Blue Glass (Phosphate Glass) |
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- NVG Blue is the special filter to absorb infrared ray.
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Properties
| Density(kg/m3) |
3.22×103 |
| Thermal expansion coeff(×10-7/K) |
113 |
| Strain point(degreeC) |
422 |
| Annealing point(degreeC) |
452 |
| Glass transition point(degreeC) |
460 |
| Deformation point(degreeC) |
505 |
| Softening point(degreeC) |
537 |
| Water resistance(*) |
Level 2 |
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(*):Based on the standard of "the glass manufactures association of Japan".
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OKAMOTO GLASS Co., Ltd.
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